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from __future__ import annotations
import re
class LabelValidator:
KEY_REGEX = re.compile(
r"^([a-z0-9A-Z]((?:[\-_.]|[a-z0-9A-Z]){0,253}[a-z0-9A-Z])?/)?[a-z0-9A-Z]((?:[\-_.]|[a-z0-9A-Z]|){0,61}[a-z0-9A-Z])?$"
)
VALUE_REGEX = re.compile(
r"^(([a-z0-9A-Z](?:[\-_.]|[a-z0-9A-Z]){0,61})?[a-z0-9A-Z]$|$)"
)
@staticmethod
def validate(labels: dict[str, str]) -> bool:
"""Validates Labels. If you want to know which key/value pair of the dict is not correctly formatted
use :func:`~hcloud.helpers.labels.validate_verbose`.
:return: bool
"""
for key, value in labels.items():
if LabelValidator.KEY_REGEX.match(key) is None:
return False
if LabelValidator.VALUE_REGEX.match(value) is None:
return False
return True
@staticmethod
def validate_verbose(labels: dict[str, str]) -> tuple[bool, str]:
"""Validates Labels and returns the corresponding error message if something is wrong. Returns True, <empty string>
if everything is fine.
:return: bool, str
"""
for key, value in labels.items():
if LabelValidator.KEY_REGEX.match(key) is None:
return (
False,
f"label key {key} is not correctly formatted",
)
if LabelValidator.VALUE_REGEX.match(value) is None:
return (
False,
f"label value {value} (key: {key}) is not correctly formatted",
)
return True, ""
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